Download or read book Ground Water in San Simon Valley Arizona and New Mexico by A T Schwennesen U S Geological Survey Water Supply Paper 425 written by United States. Congress. House and published by . This book was released on 1917 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Water supply Paper written by and published by . This book was released on 1982 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Water supply Paper written by and published by . This book was released on 1965 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Levels and Artesian Pressure in Observation Wells in the United States written by and published by . This book was released on 1925 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1961 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Electricity written by and published by . This book was released on 1919 with total page 1250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contributions to the Hydrology of the United States 1925 written by Nathan Clifford Grover and published by . This book was released on 1925 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations written by and published by . This book was released on 1972 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Middle Rio Grande Basin Study written by and published by . This book was released on 1998 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A List of the Publications of the United States Geological Survey Not Including Topographical Maps written by Geological Survey (U.S.) and published by . This book was released on 1879 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ribbon of Green written by Robert H. Webb and published by University of Arizona Press. This book was released on 2007 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woody wetlands constitute a relatively small but extremely important part of the landscape in the southwestern United States. These riparian habitats support more than one-third of the regionÕs vascular plant species, are home to a variety of wildlife, and provide essential havens for dozens of migratory animals. Because of their limited size and disproportionately high biological value, the goal of protecting wetland environments frequently takes priority over nearly all other habitat types. In The Ribbon of Green, hydrologists Robert H. Webb, and Stanley A. Leake and botanist Raymond M. Turner examine the factors that affect the stability of woody riparian vegetation, one of the largest components of riparian areas. Such factors include the diversion of surface water, flood control, and the excessive use of groundwater. Combining repeat photography with historical context and information on species composition, they document more than 140 years of change. Contrary to the common assumption of widespread losses of this type of ecosystem, the authors show that vegetation has increased on many river reaches as a result of flood control, favorable climatic conditions, and large winter floods that encourage ecosystem disturbance, germination, and the establishment of species in newly generated openings. Bringing well-documented and accessible insights to the ecological study of wetlands, this book will influence our perception of change in riparian ecosystems and how riparian restoration is practiced in the Southwest, and it will serve as an important reference in courses on plant ecology, riparian ecology, and ecosystem management.

Download or read book The Journal of Geology written by and published by . This book was released on 1919 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1893-1923 includes section: "Reviews."

Download or read book Geological Survey Bulletin written by Geological Survey (U.S.) and published by . This book was released on 1964 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report written by Geological Survey (U.S.) and published by . This book was released on 1915 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1975 Water Assessment written by Lower Colorado Region Assessment Staff and published by . This book was released on 1977 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Role of Ground Water in the National Water Situation written by Charles Lee McGuinness and published by . This book was released on 1963 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Legacy of Change written by Conrad Joseph Bahre and published by University of Arizona Press. This book was released on 2016-12-01 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arrival of Anglo settlers in the 1870s marked the beginning of major vegetation changes in southeastern Arizona, including an increase in woody plants in rangelands, the degradation of riparian wetlands, and the spread of non-native plants. While many of these changes have already been linked to human land-use through comparative photographs and historic descriptions, it has long been presumed that changes in the region's climate have also contributed to vegetation change. Geographer Conrad Bahre now challenges the view that these vegetation changes are due to climatic change. Correlating his own field research with archival records and photographs, Bahre demonstrates that most of the changes follow some type of human disturbance, such as cattle grazing, fuelwood cutting, wildfire suppression, agriculture, and road construction. Indeed, all available evidence suggests that Anglo settlement brought unprecedented changes to the land. Vegetation change in the American West has long been an issue of concern. This careful scrutiny of one corner of that region—one of the most ecologically diverse areas of the United States—shows how poorly understood is the relationship between human activities and vegetation. More important, it introduces new techniques for differentiating between natural and anthropogenic factors effecting vegetation change that can be used to help ecologists understand vegetation dynamics worldwide.